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Add lv_deinit function (#1319)

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This commit is contained in:
Amir Gonnen
2019-12-22 01:35:00 +02:00
committed by embeddedt
parent ef071d02a7
commit 248868fef1
6 changed files with 71 additions and 15 deletions
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12
src/lv_core/lv_obj.c
View File

@@ -121,6 +121,18 @@ void lv_init(void)
LV_LOG_INFO("lv_init ready");
}
#if LV_ENABLE_GC || !LV_MEM_CUSTOM
void lv_deinit(void)
{
lv_gc_clear_roots();
lv_log_register_print_cb(NULL);
lv_disp_set_default(NULL);
lv_mem_deinit();
lv_initialized = false;
LV_LOG_INFO("lv_deinit done");
}
#endif
/*--------------------
* Create and delete
*-------------------*/

9
src/lv_core/lv_obj.h
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@@ -269,6 +269,15 @@ typedef struct
*/
void lv_init(void);
/**
* Deinit the 'lv' library
* Currently only implemented when not using custorm allocators, or GC is enabled.
*/
#if LV_ENABLE_GC || !LV_MEM_CUSTOM
void lv_deinit(void);
#endif
/*--------------------
* Create and delete
*-------------------*/

11
src/lv_misc/lv_gc.c
View File

@@ -8,6 +8,11 @@
*********************/
#include "lv_gc.h"
#include "string.h"
#if defined(LV_GC_INCLUDE)
#include LV_GC_INCLUDE
#endif /* LV_ENABLE_GC */
/*********************
* DEFINES
@@ -35,6 +40,12 @@ LV_ROOTS
* GLOBAL FUNCTIONS
**********************/
void lv_gc_clear_roots(void)
{
#define LV_CLEAR_ROOT(root_type, root_name) memset(&LV_GC_ROOT(root_name), 0, sizeof(LV_GC_ROOT(root_name)));
LV_ITERATE_ROOTS(LV_CLEAR_ROOT)
}
/**********************
* STATIC FUNCTIONS
**********************/

33
src/lv_misc/lv_gc.h
View File

@@ -30,21 +30,21 @@ extern "C" {
* DEFINES
*********************/
#define LV_GC_ROOTS(prefix) \
prefix lv_ll_t _lv_task_ll; /*Linked list to store the lv_tasks*/ \
prefix lv_ll_t _lv_disp_ll; /*Linked list of screens*/ \
prefix lv_ll_t _lv_indev_ll; /*Linked list of screens*/ \
prefix lv_ll_t _lv_drv_ll; \
prefix lv_ll_t _lv_file_ll; \
prefix lv_ll_t _lv_anim_ll; \
prefix lv_ll_t _lv_group_ll; \
prefix lv_ll_t _lv_img_defoder_ll; \
prefix lv_img_cache_entry_t * _lv_img_cache_array; \
prefix void * _lv_task_act; \
prefix void * _lv_draw_buf;
#define LV_ITERATE_ROOTS(f) \
f(lv_ll_t, _lv_task_ll) /*Linked list to store the lv_tasks*/ \
f(lv_ll_t, _lv_disp_ll) /*Linked list of screens*/ \
f(lv_ll_t, _lv_indev_ll) /*Linked list of screens*/ \
f(lv_ll_t, _lv_drv_ll) \
f(lv_ll_t, _lv_file_ll) \
f(lv_ll_t, _lv_anim_ll) \
f(lv_ll_t, _lv_group_ll) \
f(lv_ll_t, _lv_img_defoder_ll) \
f(lv_img_cache_entry_t*, _lv_img_cache_array) \
f(void*, _lv_task_act) \
f(void*, _lv_draw_buf)
#define LV_NO_PREFIX
#define LV_ROOTS LV_GC_ROOTS(LV_NO_PREFIX)
#define LV_DEFINE_ROOT(root_type, root_name) root_type root_name;
#define LV_ROOTS LV_ITERATE_ROOTS(LV_DEFINE_ROOT)
#if LV_ENABLE_GC == 1
#if LV_MEM_CUSTOM != 1
@@ -52,7 +52,8 @@ extern "C" {
#endif /* LV_MEM_CUSTOM */
#else /* LV_ENABLE_GC */
#define LV_GC_ROOT(x) x
LV_GC_ROOTS(extern)
#define LV_EXTERN_ROOT(root_type, root_name) extern root_type root_name;
LV_ITERATE_ROOTS(LV_EXTERN_ROOT)
#endif /* LV_ENABLE_GC */
/**********************
@@ -63,6 +64,8 @@ LV_GC_ROOTS(extern)
* GLOBAL PROTOTYPES
**********************/
void lv_gc_clear_roots(void);
/**********************
* MACROS
**********************/

15
src/lv_misc/lv_mem.c
View File

@@ -102,6 +102,21 @@ void lv_mem_init(void)
#endif
}
/**
* Clean up the memory buffer which frees all the allocated memories.
* @note It work only if `LV_MEM_CUSTOM == 0`
*/
void lv_mem_deinit(void)
{
#if LV_MEM_CUSTOM == 0
memset(work_mem, 0x00, (LV_MEM_SIZE / sizeof(MEM_UNIT)) * sizeof(MEM_UNIT));
lv_mem_ent_t * full = (lv_mem_ent_t *)work_mem;
full->header.s.used = 0;
/*The total mem size id reduced by the first header and the close patterns */
full->header.s.d_size = LV_MEM_SIZE - sizeof(lv_mem_header_t);
#endif
}
/**
* Allocate a memory dynamically
* @param size size of the memory to allocate in bytes

6
src/lv_misc/lv_mem.h
View File

@@ -55,6 +55,12 @@ typedef struct
*/
void lv_mem_init(void);
/**
* Clean up the memory buffer which frees all the allocated memories.
* @note It work only if `LV_MEM_CUSTOM == 0`
*/
void lv_mem_deinit(void);
/**
* Allocate a memory dynamically
* @param size size of the memory to allocate in bytes